CN116982352A - Relaxing assessment of radio link quality - Google Patents

Relaxing assessment of radio link quality Download PDF

Info

Publication number
CN116982352A
CN116982352A CN202180095699.2A CN202180095699A CN116982352A CN 116982352 A CN116982352 A CN 116982352A CN 202180095699 A CN202180095699 A CN 202180095699A CN 116982352 A CN116982352 A CN 116982352A
Authority
CN
China
Prior art keywords
evaluation
terminal device
relaxation
relaxed
evaluation period
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202180095699.2A
Other languages
Chinese (zh)
Inventor
牛华宁
叶思根
张大伟
唐扬
崔杰
M·拉加万
李启明
陈翔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Apple Inc
Original Assignee
Apple Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Apple Inc filed Critical Apple Inc
Publication of CN116982352A publication Critical patent/CN116982352A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Embodiments of the present disclosure relate to apparatus, methods, devices, and computer-readable storage media for relaxing assessment of radio link quality. According to an embodiment of the present disclosure, a terminal device transmits capability information to a network device, the capability information indicating a capability of the terminal device to relax an assessment of radio link quality. The terminal device receives a relaxation configuration from the network device for relaxing the evaluation. The terminal device performs the evaluation using a relaxation evaluation period determined based on the relaxation configuration. The relaxed evaluation period is longer than a normal evaluation period without relaxing the evaluation.

Description

Relaxing assessment of radio link quality
Technical Field
Embodiments of the present disclosure relate generally to the field of telecommunications and, in particular, relate to a method, apparatus, and computer-readable storage medium for relaxing an assessment of radio link quality.
Background
The new air interface access system, also called NR system or NR network, is a next generation communication system. In an NR system, a User Equipment (UE) and a next generation NodeB (gNB) may communicate via multiple beams. Beam failure may occur when the quality of the beam pair of the serving cell drops sufficiently low. To this end, the UE performs Beam Fault Detection (BFD) to detect when one or more Physical Downlink Control Channel (PDCCH) links are deemed to be in a fault condition. Further, the UE may perform Radio Link Monitoring (RLM) to monitor the quality of the radio link between the UE and the gNB.
Disclosure of Invention
In general, exemplary embodiments of the present disclosure provide a solution for relaxing the evaluation of radio link quality.
In a first aspect, a method is provided. The method comprises the following steps: transmitting capability information from the terminal device to the network device, the capability information indicating a capability of the terminal device to relax an assessment of radio link quality; receiving a relaxation configuration from the network device for relaxing the evaluation; and performing the evaluation using a relaxed evaluation period determined based on the relaxed configuration, the relaxed evaluation period being longer than a normal evaluation period without relaxing the evaluation.
In a second aspect, an apparatus is provided. The device comprises: means for transmitting capability information from the terminal device to the network device, the capability information indicating a capability of the terminal device to relax an assessment of radio link quality; means for receiving a relaxation configuration from the network device for relaxing the evaluation; and means for performing the evaluation using a relaxed evaluation period determined based on the relaxed configuration, the relaxed evaluation period being longer than a normal evaluation period without relaxing the evaluation.
In a third aspect, a terminal device is provided. The terminal device comprises at least one processor and at least one memory including computer program code. The at least one memory and the computer program code are configured to, with the at least one processor, cause the terminal device to transmit capability information to a network device, the capability information indicating a capability of the terminal device to relax an assessment of radio link quality; receiving a relaxation configuration from the network device for relaxing the evaluation; and performing the evaluation using a relaxed evaluation period determined based on the relaxed configuration, the relaxed evaluation period being longer than a normal evaluation period without relaxing the evaluation.
In a fourth aspect, a computer program product is provided, the computer program product being stored on a computer readable medium and comprising machine executable instructions. These machine executable instructions, when executed, cause a machine to perform a method according to the above first aspect.
In a fifth aspect, a method is provided. The method comprises the following steps: receiving capability information from a terminal device at a network device, the capability information indicating a capability of the terminal device to relax an assessment of radio link quality; transmitting a relaxation configuration for relaxing the evaluation to the terminal device so that the terminal device performs the evaluation using a relaxation evaluation period determined based on the relaxation configuration, the relaxation evaluation period being longer than a normal evaluation period in which the evaluation is not relaxed.
In a sixth aspect, an apparatus is provided. The device comprises: means for receiving capability information from a terminal device at a network device, the capability information indicating a capability of the terminal device to relax an assessment of radio link quality; and means for transmitting a relaxation configuration for relaxing the evaluation to the terminal device such that the terminal device performs the evaluation using a relaxation evaluation period determined based on the relaxation configuration, the relaxation evaluation period being longer than a normal evaluation period in which the evaluation is not relaxed.
In a seventh aspect, a network device is provided. The network device includes at least one processor and at least one memory including computer program code. The at least one memory and the computer program code are configured to, with the at least one processor, cause the network device to receive capability information from a terminal device, the capability information indicating a capability of the terminal device to relax an assessment of radio link quality; and transmitting a relaxation configuration for relaxing the evaluation to the terminal device so that the terminal device performs the evaluation using a relaxation evaluation period determined based on the relaxation configuration, the relaxation evaluation period being longer than a normal evaluation period in which the evaluation is not relaxed.
In an eighth aspect, a computer program product is provided, the computer program product being stored on a computer readable medium and comprising machine executable instructions. These machine-executable instructions, when executed, cause the machine to perform a method according to the fifth aspect above.
In a ninth aspect, a baseband processor of a terminal device is provided. The baseband processor is configured to perform the method according to the above first aspect.
In a tenth aspect, a baseband processor of a network device is provided. The baseband processor is configured to perform the method according to the above fifth aspect.
It should be understood that the summary is not intended to identify key or essential features of the embodiments of the disclosure, nor is it intended to be used to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following description.
Drawings
The foregoing and other objects, features, and advantages of the disclosure will be apparent from the following more particular description of certain embodiments of the disclosure, as illustrated in the accompanying drawings in which:
FIG. 1 illustrates an exemplary communication network in which exemplary embodiments of the present disclosure may be implemented;
FIG. 2 illustrates a flow chart showing an exemplary process for relaxation assessment, according to some embodiments of the present disclosure;
FIG. 3A shows a schematic diagram of measurements prior to relaxation according to some embodiments of the present disclosure;
FIG. 3B illustrates a schematic diagram of measurement after relaxation according to some embodiments of the present disclosure;
fig. 4 illustrates a flowchart of an exemplary method performed by a terminal device for measurement relaxation, according to some embodiments of the present disclosure;
Fig. 5 illustrates a flowchart of an exemplary method performed by a network device for measurement relaxation, according to some embodiments of the present disclosure; and is also provided with
Fig. 6 shows a simplified block diagram of an apparatus suitable for practicing embodiments of the present disclosure.
Throughout the drawings, the same or similar reference numerals refer to the same or similar elements.
Detailed Description
The principles of the present disclosure will now be described with reference to some embodiments. It should be understood that these embodiments are described for illustrative purposes only and to assist those skilled in the art in understanding and practicing the present disclosure, and are not meant to limit the scope of the present disclosure in any way. The disclosure described herein may be implemented in various ways, except as described below.
In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
References in the present disclosure to "one embodiment," "an example embodiment," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Also, such phraseology and terminology does not necessarily refer to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
It will be further understood that, although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments. As used herein, the term "and/or" includes any and all combinations of one or more of the listed terms.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. As used herein, a "set of elements" is intended to include one or more elements. It will be further understood that the terms "comprises," "comprising," "includes," "including," and/or "having," when used herein, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof.
As used in this disclosure, the term "circuit" may refer to one or more or all of the following:
(a) Only hardware circuitry implementations (such as implementations in analog and/or digital circuitry only),
and
(b) A combination of hardware circuitry and software, such as (if applicable):
(i) Combination of analog and/or digital hardware circuitry and software/firmware, and
(ii) A hardware processor (including a digital signal processor) having software, any portion of the software and memory that work together to cause a device such as a mobile phone or server to perform various functions, and
(c) Hardware circuitry and/or a processor, such as a microprocessor or a portion of a microprocessor, that requires software (e.g., firmware) to operate, but software may not be present when software is not required to operate.
This circuit definition applies to all uses of this term in this application, including in any claims. As another example, as used in this disclosure, the term circuitry also encompasses a hardware-only circuit or processor (or processors) or a portion of a hardware circuit or processor and its (or their) accompanying implementations of software and/or firmware. The term "circuitry" also encompasses (e.g., and if applicable to the particular claim element) a baseband integrated circuit or processor integrated circuit or server for a mobile device, a cellular network device, or a similar integrated circuit in another computing or network device.
As used herein, the term "communication network" refers to a network that conforms to any suitable communication standard, such as Long Term Evolution (LTE), LTE-advanced (LTE-a), wideband Code Division Multiple Access (WCDMA), high Speed Packet Access (HSPA), narrowband internet of things (NB-IoT), new air interface (NR), and the like. Furthermore, communication between a terminal device and a network device in a communication network may be performed according to any suitable generation communication protocol, including, but not limited to, a first generation (1G) communication protocol, a second generation (2G) communication protocol, a 2.5G communication protocol, a 2.75G communication protocol, a third generation (3G) communication protocol, a fourth generation (4G) communication protocol, a 4.5G communication protocol, a future fifth generation (5G) communication protocol, and/or any other protocol currently known or developed in the future. Embodiments of the present disclosure may be applied in various communication systems. In view of the rapid development of communications, there will of course also be future types of communication technologies and systems that may embody the present disclosure. It should not be taken as limiting the scope of the present disclosure to only the above-described systems.
As used herein, the term "network device" refers to a node in a communication network via which a terminal device accesses the network and receives services therefrom. Depending on the terminology and technology applied, a network device may refer to a Base Station (BS) or an Access Point (AP), such as a node B (NodeB or NB), an evolved NodeB (eNodeB or eNB), an NR NB (also known as a gNB), a Remote Radio Unit (RRU), a Radio Header (RH), a Remote Radio Head (RRH), a relay node, a low power node (such as femto, pico, etc.). An example of a relay node may be an Integrated Access and Backhaul (IAB) node. The Distributed Unit (DU) portion of the IAB node may perform the functions of a "network device" and thus may operate as a network device. In the following description, the terms "network device", "BS" and "node" are used interchangeably.
The term "terminal device" refers to any terminal device capable of wireless communication. By way of example and not limitation, a terminal device may also be referred to as a communication device, user Equipment (UE), subscriber Station (SS), portable subscriber station, mobile Station (MS), or Access Terminal (AT). Terminal devices may include, but are not limited to, mobile phones, cellular phones, smart phones, voice over IP (VoIP) phones, wireless local loop phones, tablet computers, wearable terminal devices, personal Digital Assistants (PDAs), portable computers, desktop computers, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, in-vehicle wireless terminal devices, wireless endpoints, mobile stations, notebook computer embedded equipment (LEEs), notebook computer installation equipment (LMEs), USB dongles, smart devices, wireless Customer Premise Equipment (CPE), internet of things (loT) devices, watches or other wearable devices, head Mounted Displays (HMDs), vehicles, drones, medical devices and applications (e.g., tele-surgery), industrial devices and applications (e.g., robots and/or other wireless devices operating in an industrial and/or automated processing chain environment), consumer electronics devices, relay nodes, devices operating on commercial and/or industrial wireless networks, and the like. The Mobile Terminal (MT) part of the IAB node may perform the function of a "terminal device" and thus may operate as a terminal device. In the following description, the terms "terminal device", "communication device", "terminal", "user equipment" and "UE" are used interchangeably.
Although in various exemplary embodiments, the functions described herein may be performed in fixed and/or wireless network nodes, in other exemplary embodiments, the functions may be implemented in a user equipment device, such as a cellular telephone or tablet or laptop or desktop computer or mobile IOT device or fixed IOT device. The user equipment device may be equipped with the corresponding capabilities described in connection with the fixed and/or wireless network nodes, as the case may be, for example. The user equipment apparatus may be a user equipment and/or a control device, such as a chipset or a processor, configured to control the user equipment when installed in the user equipment. Examples of such functions include a bootstrapping server function and/or a home subscriber server, which may be implemented in a user equipment device by providing the user equipment device with software configured to cause the user equipment device to execute from the perspective of the functions/nodes.
As used herein, the term "relaxed evaluation" or variants thereof means that a longer or relaxed evaluation period is used to perform the evaluation. For example, the term "relaxing BFD" or "relaxation of BFD" may mean that BFD is performed using a longer or relaxed evaluation period. Similarly, the term "relaxing RLM" or "relaxation of RLM" may mean that longer or relaxed evaluation periods are used to perform RLM.
In some cases, it is desirable to use a longer or relaxed evaluation period to relax the evaluation to save power for the UE. On the other hand, relaxation of the evaluation may cause adverse effects in some cases. For example, in frequency range 2 (FR 2), the beam used by the UE may change rapidly as the UE rotates. In this case, a longer evaluation period may deteriorate the system performance, and relaxation may not be necessary. However, since advanced beam management for better reception (Rx) beam tracking occurs, the UE is allowed to perform relaxation in some cases. Thus, it would be desirable for the UE to perform relaxation only when it is able and allowed to do so.
Embodiments of the present disclosure propose a solution for relaxation assessment in order to provide better power saving for terminal devices without adverse effects. In this solution, the terminal device transmits capability information to the network device. The capability information indicates the capability of the terminal device to relax the assessment of the quality of the wireless link. The terminal device receives a relaxation configuration for relaxation evaluation from the network device. The relaxation configuration may include a relaxation factor. The terminal device may receive a standard configuration indicating a set of standards. Then, if the set of criteria is met, the terminal device may perform the evaluation using the relaxed evaluation period. The relaxation evaluation period is determined based on the relaxation configuration and is longer than a normal evaluation period without relaxation evaluation.
In an exemplary embodiment, the terminal device performs the relaxation after the network device receives its relaxation capabilities. The terminal device performs the relaxation when it has corresponding capabilities and is allowed to relax the evaluation of the radio link quality. Thus, according to an exemplary embodiment, the terminal device performs relaxation in a specific situation, and any influence of undesired relaxation is minimized. In this way, better power savings can be achieved for the terminal device without adverse effects.
The principles and implementations of the present disclosure will be described in detail below with reference to fig. 1-6.
Fig. 1 illustrates an exemplary communication network 100 in which embodiments of the present disclosure may be implemented. The network 100 includes a network device 110 and a terminal device 120 served by the network device 110. The network 100 may provide one or more serving cells to serve the terminal device 120.
In some embodiments, carrier Aggregation (CA) may be supported in network 100, where two or more Component Carriers (CCs) are aggregated in order to support wider bandwidth. In CA, the network device 110 may provide a plurality of serving cells including a primary cell (Pcell) 101 and at least one secondary cell (Scell) 102 to the terminal device 120. Although only one Scell102 is shown in fig. 1, the network device 110 may provide multiple scells. It should also be understood that the configuration of Pcell 101 and Scell102 shown in fig. 1 is for illustration purposes only and not meant to be limiting in any way. The Pcell 101 and Scell102 may be of a different configuration than that shown in fig. 1.
In some embodiments, dual Connectivity (DC) may be supported in the network 100. In DC, terminal device 120 may be configured to utilize radio resources provided by two network devices, e.g., network device 110 and another network device (not shown). Each of the two network devices may provide a group of service cells to the terminal device 120.
It should be understood that the number of network devices 110, terminal devices 120, and serving cells are for illustration purposes only and are not meant to be limiting in any way. Network 100 may include any suitable number of network devices, terminal devices, and serving cells suitable for implementing embodiments of the present disclosure. It should be noted that the terms "cell" and "serving cell" are used interchangeably herein.
In the communication network 100, the network device 110 may transmit data and control information to the terminal device 120, and the terminal device 120 may also transmit data and control information to the network device 110. The link from network device 110 to terminal device 120 is referred to as the Downlink (DL) or forward link, and the link from terminal device 120 to network device 110 is referred to as the Uplink (UL) or reverse link.
Communications in network 100 may conform to any suitable standard including, but not limited to, long Term Evolution (LTE), LTE-evolution, LTE-advanced (LTE-a), wideband Code Division Multiple Access (WCDMA), code Division Multiple Access (CDMA), global system for mobile communications (GSM), and the like. Furthermore, the communication may be performed according to any generation of communication protocols currently known or to be developed in the future. Examples of communication protocols include, but are not limited to, first generation (1G) communication protocols, second generation (2G) communication protocols, 2.5G communication protocols, 2.75G communication protocols, third generation (3G) communication protocols, fourth generation (4G) communication protocols, 4.5G communication protocols, and fifth generation (5G) communication protocols.
In communication network 100, network device 110 is configured to implement beamforming techniques and transmit signals to terminal device 120 via a plurality of beams. Terminal device 120 is configured to receive signals transmitted by network device 110 via the plurality of beams. There may be different beams configured for Pcell 101 and Scell 102. As shown in fig. 1, DL beam 111 is configured for Scell 102. It should be appreciated that the Scell 102 may have more beams associated with it. Although not shown, the Pcell 101 may also have a beam associated therewith.
In the communication network 100, the terminal device 120 in the connected mode performs an evaluation of the radio link quality for the link between the terminal device 120 and the network device 110. For example, terminal device 120 may perform BFD and RLM. The assessment of the radio link quality can be relaxed.
Reference is now made to fig. 2. Fig. 2 illustrates a flow chart of an exemplary process 200 for relaxation assessment, according to some embodiments of the present disclosure. For discussion purposes, process 200 will be described with reference to FIG. 1. Process 200 may involve terminal device 110 and network device 120 shown in fig. 1.
As shown in fig. 2, the terminal device 120 transmits 205 capability information to the network device 110. The capability information indicates the capability of the terminal device 120 to relax the assessment of the quality of the wireless link. The evaluation of the radio link quality may include BFD and RLM. For example, terminal device 110 may be able to relax the evaluation due to advanced beam management. This advanced beam management may better handle Rx beam tracking, allowing the terminal device 120 to perform relaxation in FR2 even when the terminal device 120 rotates. In this case, the terminal device 120 may transmit the capability information to the network device 110. The capability information may be transmitted via higher layer signaling, e.g., radio Resource Control (RRC) signaling.
After receiving the capability information, the network device 110 transmits 210 to the terminal device 120 a relaxation configuration for relaxation assessment. The relaxation configuration may be transmitted with higher layer signaling. For example, the relaxation configuration may be included in a physical cellgroupconfig message. As shown below, the physical cellgroupconfig message may include an Information Element (IE) "delaxedrlmbfd-r 17".
RelaxedRLMBFD-r17::＝SEQUENCE{
ps-RLMBFD-relaxation-FR2-r17 ENUMERATED{2,3,4,5}OPTIONAL--Need S
In some embodiments, the relaxation configuration may indicate a relaxation factor Q for determining the evaluation period, e.g. "2, 3, 4, 5" as listed. The network device 110 may determine the relaxation factor Q based on other relevant configurations of the terminal device 220. The network device 110 may determine the relaxation factor Q based on a Discontinuous Reception (DRX) cycle configured to the terminal device 120. For example, if the DRX cycle is small or no DRX, the network device 110 may configure a larger Q. Alternatively or in addition, the network device 110 may determine the relaxation factor Q based on a configuration of a Reference Signal (RS) on which the evaluation is to be performed. For example, the relaxation factor Q may be different for RLM-based channel state information-reference signals (CSI-RS) and RLM-based SSB. Similarly, the relaxation factor Q may be different for BFD-based CSI-RS and BFD-based SSB. It should be understood that the value of the relaxation factor Q is given by way of example only and does not imply any limitation on the scope of the disclosure.
Alternatively, in some embodiments, the relaxation configuration may correspond to one or more predefined relaxation factors. For example, a relaxation factor corresponding to a relaxation configuration may be predefined in a technical specification or standard. In such embodiments, the relaxation factor may be associated with the DRX cycle used by the terminal device 120, the type of RS on which the evaluation is to be performed (e.g., CSI-RS, SSB). Such embodiments will be described in detail below with reference to tables 1-4.
As shown in fig. 2, in some embodiments, network device 110 may also transmit 215 standard configurations to terminal device 120. The standard configuration may indicate a set of criteria for relaxation assessment. The set of criteria may include at least one of mobility criteria and cell edge criteria. Other suitable criteria are also possible.
The mobility criterion may explicitly indicate that the terminal device 120 is in a low mobility state and may therefore also be referred to as a "low mobility criterion". The mobility criterion may be defined as the variation of Reference Signal Received Quality (RSRQ) over time. For example, the mobility standard may be defined as delta_rsrq (which may be referred to as "RSRQ condition") as a function of delta_time in the following "ps-lowmobility evaluation-r17" IE.
The "ps-lowMobiltyEval-r 17" IE may include an "s-SearchDeltaQ-r17" field and a "t-SearchDeltaQ-r17" field. The "s-SearchDeltaQ-r17" field may provide poor quality, and the "t-SearchDeltaQ-r17" field may define time. Mobility criteria may be considered to be met if the change in RSRQ measured by terminal device 120 does not exceed a given quality threshold within a given time.
Alternatively or in addition, the mobility criterion may be defined as a change in signal to interference plus noise ratio (SINR) over time. For example, the mobility standard may be defined as delta_sinr (which may be referred to as a "SINR condition") as a function of delta_time in the following "ps-lowmobility estimation-r 17" IE.
Alternatively or in addition, the mobility criterion may be defined as a change in Reference Signal Received Power (RSRP). For example, the mobility criterion may be defined as delta_rsrp, which may be referred to as "RSRP condition", which varies with delta_time.
The cell edge criterion may explicitly indicate that the terminal device 120 is not located at an edge region of the serving cell and may therefore also be referred to as "not-in-cell edge criterion". As shown below, at least one of RSRP, RSRQ, SINR may be used as a cell edge criterion.
ps-cellEdgeEvaluation-r17 SEQUENCE{
s-SearchThresholdP-r17 ReselectionThreshold OPTIONAL,--Need R
s-SearchThreshodQ-r17 ReselectionThreshold OPTIONAL,--Need R
s-SearchThreshodSINR-r17 ReselectionThreshold OPTIONAL,--Need R
}
The "ps-celledge evaluation-r17" field may provide parameters of cell edge criteria, including, for example, "s-SearchThreshold P", "s-SearchThreshold Q", and "s-SearchThreshold SINR" fields. "s-SearchThreshold" may provide the Srxlev threshold (in decibels (dB)) for relaxation assessment. Srxlev may be a reception level value (e.g., RSRP) measured by the terminal apparatus 120. The s-SearchThreshold Q may provide a square threshold for relaxation assessment. The square may be a quality level value (e.g., RSRQ) measured by the terminal device 120. If the RSRP, RSRQ or SINR measured by the terminal device 120 is higher than the corresponding threshold, the terminal device 120 may be considered to meet the cell edge criteria and the terminal device 120 may determine that it is not located in an edge region of the cell, for example.
In some implementations, the standard configuration may be signaled in the physical cell group configuration element physical cell group pconfig. This can be used to accommodate cases such as with or without DRX configuration for RLM/BFD in FR 2.
In some embodiments, the relaxation configuration and the standard configuration may be signaled in the same message. For example, the relaxation configuration and the standard configuration may be defined in different fields of the same IE (e.g., in different fields of a physical cellgroupconfig message). Alternatively, in some embodiments, the relaxation configuration and the standard configuration may be signaled in different messages.
After receiving the standard configuration from the network device 110, the terminal device 120 performs 220 the evaluation using the relaxed evaluation period. A relaxation evaluation period is determined based on the relaxation configuration. The relaxed evaluation period is longer than a normal evaluation period (e.g., a corresponding evaluation period as determined according to conventional solutions) without relaxing the evaluation.
In some embodiments, the terminal device 120 may perform relaxation based on standard configurations. The terminal device 120 may determine whether to perform relaxation based on the standard configuration.
For example, in the case where the standard configuration received from the network device 110 indicates only one standard (such as a mobility standard or a cell edge standard), the terminal device 120 may perform relaxation if the standard is satisfied.
Alternatively, in case the standard configuration indicates only one standard, such as a mobility standard or a cell edge standard, the terminal device 120 may perform the relaxation if the cell center requirement is fulfilled. The cell center requirement may be defined as Srxlev > snonintrasetp and square > snonintrasetq. If the cell center requirement is met, the terminal device 120 may be located at the center region of the serving cell.
Alternatively, in the case where the standard configuration indicates both the mobility standard and the cell edge standard, the terminal device 120 may perform relaxation if any of these standards is satisfied.
Alternatively, in the case where the standard configuration indicates both the mobility standard and the cell edge standard, the terminal device 120 may perform relaxation only when both standards are satisfied.
In some embodiments, network device 110 may configure a plurality of conditions for one standard. For example, mobility conditions or cell edge criteria may include both RSRQ and SINR conditions. In this case, if any one of these conditions is satisfied, the terminal device 120 may determine that the criterion is satisfied. Alternatively, the terminal device 120 may determine that the criterion is satisfied only when all the conditions are satisfied.
When the terminal device 120 determines to perform relaxation based on the relaxation criterion, the terminal device 120 performs 220 an evaluation using the relaxation evaluation period. The relaxed evaluation period may be longer than the normal evaluation period.
In some embodiments, the relaxation evaluation period may be determined based on the relaxation factor Q. The relaxed evaluation period T of CSI-RS based BFD in FR2 can be calculated according to Table 1 Relax_Evaluate_BFD_CSI-RS 。
Relax_Evaluate_BFD_CSI-RS Table 1: relaxation of evaluation period T for FR2
In Table 1 above, M BFD Representing the number of beam measurements, or in other words the number of L1 indications for BFD. P denotes how the measurements are shared. Depending on the different conditions, P may have a value of 1, or equal to the sharing factor P Sharing factors Or based on other parameters configured by network device 110. N represents the number of receive beams used by the terminal device 120. P (P) BFD Representing the sharing factor between different serving cells.
Similarly, the relaxed evaluation period T of SSB-based BFD in FR2 can be calculated from Table 2 Relax_Evaluate_BFD_SSB 。
Relax_Evaluate_BFD_SSB Table 2: relaxation of evaluation period T for FR2
As can be seen from tables 1 to 2, the relaxation factor Q may be associated with a DRX cycle, a type of RS (e.g., CSI-RS, SSB). The value of the relaxation factor Q may be different in tables 1 to 2. In other words, the relaxation factor Q may be different for CSI-RS based BFD and SSB based BFD. Alternatively or in addition, the value of the relaxation factor Q may be different for different rows of the same table. In other words, the relaxation factor Q may be different for different DRX cycles, such as no DRX, DRX cycle < 320ms, and DRX cycle >320 ms.
Similarly, the relaxed evaluation period T of the CSI-RS based RLM in FR2 can be calculated from Table 3 Relax_Evaluate_out_CSI-RS And T Relax_Evaluate_out_CSI-RS 。
Relax_Evaluate_out_CSI-RS Relax_Evaluate_in_CSI-RS Table 3: relaxation of evaluation periods T and T for FR2
Similarly, the relaxed evaluation period T of the SSB-based RLM in FR2 can be calculated from Table 4 Relax_Evaluate_out_SSB And T Relax_Evaluate_out_SSB 。
Relax_Evaluate_out_SSB Relax_Evaluate_in_SSB Table 4: relaxation of evaluation periods T and T for FR2
As can be seen from tables 3 to 4, the relaxation factor Q may be associated with a DRX cycle, a type of RS (e.g., CSI-RS, SSB). The value of the relaxation factor Q may be different in tables 3 to 4. In other words, the relaxation factor Q may be different for CSI-RS based RLM and SSB based RLM. Alternatively or in addition, the value of the relaxation factor Q may be different for different rows of the same table. In other words, the relaxation factor Q may be different for different DRX cycles, such as no DRX, DRX cycle < 320ms, and DRX cycle >320 ms.
As mentioned above, in some embodiments, the relaxation factor Q used to determine the relaxation of the evaluation period may be obtained from a relaxation configuration received from the network device 110. For example, the relaxation factor Q may be signaled in the "ps-RLMBFD-relaxation-FR2-r17" field as shown above.
Alternatively, in some embodiments, the relaxation factor Q may be predefined for the relaxation configuration received from the network device 110. For example, the relaxation factor Q may be defined in a technical specification, such as that defined accompanying tables 1 to 4.
Taking table 3 as an example, in this embodiment, the configured RLM-RS resources are configured CSI-RS resources. T (T) Relax_Evaluate_out_CSI-RS May be a relaxed evaluation period in which the terminal device 120 determines whether the downlink radio link quality on the configured RLM-RS resources becomes worse than the out-of-sync quality threshold Qout. T (T) Relax_Evaluate_in_CSI-RS It may be an evaluation period in which the terminal device 120 has to determine whether the downlink radio link quality on the configured RLM-RS resource becomes better than the synchronization quality threshold Qin.
Alternatively or in addition, for CSI-RS based BFD in FR2, the relaxed evaluation period T may be calculated with N equal to 8. As described above, the normal evaluation period of CSI-RS based BFD in FR2 may be calculated with N equal to 1. Thus, increasing the value of N can achieve an effect similar to multiplying Q in the equation. Note that N represents the number of Rx beams for BFD, and N depends on the specific implementation of terminal device 120. Thus, in this case, the terminal device 120 with better beam management can be allowed to use a longer relaxed evaluation period, and better power saving can be achieved.
In some embodiments, if the configured set of criteria is not met, the terminal device 120 may resume performing 225 the evaluation using the normal evaluation period. For example, after the terminal device 120 performs relaxation for a period of time, the configured set of criteria may no longer be met. In this case, the terminal device 120 may resume normal operation, i.e., perform the evaluation using the normal evaluation.
As an example, if the network device 110 configures both mobility criteria and cell edge criteria, the terminal device 120 may revert to normal operation without meeting any of these criteria. Alternatively, if neither criterion is met, the terminal device 120 may revert to normal operation.
Alternatively or in addition, if the counter starts counting, the terminal device 120 may resume performing the evaluation using the normal evaluation period. A counter may be used to count the number of consecutive out-of-sync indications. For example, the counter may be N310, which represents the maximum number of consecutive "out of sync" indications received from lower layers for a Pcell. The counter may be reset if: upon receiving a "synchronize" indication from a lower layer; upon receiving the rrcrecnonconfiguration with the reconfigurationwisync for that cell group; or upon initiation of a connection re-establishment procedure.
Alternatively, if the timer is started, the terminal device 120 may restart performing the evaluation using the normal evaluation. This time may be used to monitor the latency of the radio link failure. The timer may be T310, which is started when a physical layer problem of the Pcell is detected, i.e. when N310 consecutive out-of-sync indications are received from the lower layer. T310 may begin when N310 reaches a maximum. Therefore, in this case, the terminal device 120 may be restored to normal operation later than the case of using the counter N310 described above.
In case carrier aggregation or dual connectivity is employed, the terminal device 120 may perform BFD in more than one serving cell in both FR1 and FR 2. Thus, the terminal device 120 may need to determine which serving cell or cells are relaxed for BFD.
For both FR1 and FR2, in some embodiments, the terminal device 120 may perform BFD using a relaxed evaluation period in the serving cell for which at least one criterion of the set of criteria is met. In other words, the terminal device 120 may also perform the relaxation only in the serving cell for which the criterion is fulfilled. For example, in the case where the network device 110 configures both the mobility standard and the cell edge standard, if any of these standards is satisfied for the serving cell, the terminal device 120 may perform relaxation in the serving cell. Alternatively, if both criteria are met for a serving cell, the terminal device 120 may perform relaxation in that serving cell. The terminal device 120 may not perform the relaxation in the serving cell for which the configured set of criteria is not met.
Alternatively, in some embodiments, if at least one criterion of the set of criteria is met for the serving cell, the terminal device 120 may perform BFD using a relaxed evaluation period in all serving cells. For example, in the case where the network device 110 configures both mobility criteria and cell edge criteria, if either or both of these criteria are met for the serving cell, the terminal device 120 may perform relaxed BFD in all serving cells. As another example, in the case where the network device 110 configures only the mobility standard, the terminal device 120 may perform the relaxed BFD in all the serving cells if the mobility standard is satisfied for one serving cell.
Alternatively, in some embodiments, if at least one criterion of the set of criteria is met in all serving cells, terminal device 120 may perform BFD using a relaxed evaluation period in all serving cells. For example, in the case where the network device 110 configures both mobility criteria and cell edge criteria, the terminal device 120 may perform relaxed BFD in all serving cells if either or both of these criteria are met for all serving cells. As another example, in the case where the network device 110 configures only the mobility standard, the terminal device 120 may perform the relaxed BFD in all serving cells if the mobility standard is satisfied for all serving cells.
For FR2, in some embodiments, the terminal device 120 may perform relaxed BFD in a group of serving cells configured with the same beam if at least one criterion of the set of criteria is met for the serving cells in the group. In terms of Common Beam Management (CBM), a group of serving cells may be all the serving cells of the terminal device 120. In terms of Independent Beam Management (IBM), the group of serving cells may be those configured with the same beam.
Alternatively, for FR2, in some embodiments, terminal device 120 may perform relaxed BFD in a group of serving cells configured with the same beam if at least one criterion of the set of criteria is met for all serving cells in the group. In the case of CBM, the group of serving cells may be all the serving cells of the terminal device 120. In the case of IBM, the set of serving cells may be those configured with the same beam.
In this way, the terminal device 120 can perform relaxation of the evaluation based on the standard configuration only when the terminal device can relax. Thus, the terminal device 120 is allowed to perform relaxation to save power while avoiding adverse behavior triggered by the relaxed evaluation period. Thus, better power savings may be achieved for the terminal device 120.
Fig. 3A illustrates a schematic 300 of measurements prior to relaxation according to some embodiments of the present disclosure, and fig. 3B illustrates a schematic 350 of measurements after relaxation according to some embodiments of the present disclosure. The terminal device 120 may also perform the evaluation by performing measurements on the RS resources.
As described above, the sharing factor P indicates how the measurements are shared; and P is BFD Representing the sharing factor between different serving cells. As an example, for CSI-RS based BFD, P for each CSI-RS resource in set q1 configured for Pcell or PScell BFD =1. For each CSI-RS resource in set q1 configured for Scell, P BFD Is the number of frequency bands on which the terminal device 120 is performing candidate beam detection only for scells.
As shown in fig. 3A, before relaxation, the terminal device 120 may perform measurements on each RS resource 301-1 to 301-8 as shown in the Pcell. The terminal device 120 may perform measurement on RS resources of every other RS resource in the Scell. For example, measurements are performed on RS resources 302-1, 302-3, 302-5, and 302-7 in Scell 1, and measurements are performed on RS resources 303-2, 303-4, 303-6, and 303-8 in Scell 2. Measurements are not performed on RS resources represented by unfilled blocks, such as RS resource 302-2.
The same sharing factor may be applied when the relaxation is applied to different scells. For example, fig. 3B shows that for Scell, the relaxation factor Q is equal to 2 and P BFD Case=2. In case of a relaxation factor q=2, the terminal device 120 may perform measurement on half (1/Q) RS resources. As shown in fig. 3B, the terminal device 120 may perform measurement on RS resources of every other RS resource in the Pcell. For example, measurements are performed on RS resources 351-1, 351-3, 351-5, and 351-7 in a Pcell. In addition, measurements are performed on RS resources 352-1 and 352-5 in Scell 1. Measurements are performed on RS resources 353-3 and 303-7 in Scell 2. Measurements are not performed on RS resources represented by unfilled blocks, such as RS resource 351-2.
In this way, the terminal device 120 performs measurement on the reduced number of RS resources, thus relaxing the evaluation in order to save power.
Further details of exemplary embodiments according to the present disclosure will be described with reference to fig. 4 to 5.
Fig. 4 illustrates a flowchart of an exemplary method 400 performed by a terminal device for measurement relaxation, according to some embodiments of the present disclosure. The method 400 may be implemented at a device (e.g., the terminal device 120 shown in fig. 1). It should be understood that method 400 may include additional blocks not shown and/or may omit some of the blocks shown, and that the scope of the present disclosure is not limited in this respect.
At block 410, the terminal device 120 transmits capability information to the network device 110. The capability information indicates the capability of the terminal device 120 to relax the assessment of the quality of the wireless link. In some embodiments, the evaluation may include at least one of RLM and BFD.
At block 420, terminal device 120 receives a relaxation configuration from network device 110 for relaxation assessment. For example, the relaxation configuration may be included in a physical cellgroupconfig message.
At block 430, the terminal device 120 performs an evaluation using the relaxed evaluation period determined based on the relaxed configuration. The relaxed evaluation period is longer than a normal evaluation period without relaxing the evaluation. The relaxation evaluation period may be determined based on a relaxation factor corresponding to the relaxation configuration.
In some embodiments, the terminal device 120 may determine the relaxed evaluation period based on the relaxation factor indicated in the relaxation configuration. For example, the relaxation factor may be defined in a field of the relaxation configuration. In some embodiments, the relaxation factor may be determined by network device 110 based on a DRX cycle configured to terminal device 120. Alternatively, the relaxation factor may be determined by the network device 110 based on the configuration of the reference signal on which the evaluation is to be performed. Alternatively, the relaxation factor may be determined by the network device 110 based on both the DRX cycle and the configuration of the reference signal.
Alternatively, the terminal device 110 may determine the relaxation evaluation period based on a relaxation factor predefined for the relaxation configuration. In such implementations, the relaxation factor may be associated with at least one of a DRX cycle used by the terminal device 120 or a type of reference signal on which to perform the evaluation.
In some embodiments, terminal device 120 may receive standard configurations from network device 110. The standard configuration may indicate a set of criteria for relaxation assessment. The terminal device 120 may then perform the evaluation using the relaxed evaluation period based on the standard configuration.
In such exemplary embodiments, the set of criteria may include at least one of mobility criteria and cell edge criteria. The mobility criterion may explicitly indicate that the terminal device is in a low mobility state. The cell edge criterion may explicitly indicate that the terminal device is not located at the edge region of the serving cell.
In such an example embodiment, in case the standard configuration indicates only the mobility standard, the terminal device 120 may perform the evaluation using a relaxed evaluation period if the terminal device 120 is located at the central area of the serving cell. If the requirements of Srxlev > snonintrasetp and square > snonintrasetq are met, it may be determined that terminal device 120 is located at the center area of the serving cell.
Alternatively, in the case where the standard configuration indicates both the mobility standard and the cell edge standard, the terminal device 120 may perform the evaluation using a relaxed evaluation period if at least one of the mobility standard and the cell edge standard is satisfied. For example, if any of the set of criteria is met, the terminal device 120 may perform relaxation. Alternatively or in addition, the terminal device 120 may perform relaxation if two criteria of the set of criteria are met.
In some embodiments, the terminal device 120 may adjust the relaxation factor based on the number of criteria that are met. The relaxation factor may be used to determine a relaxation evaluation period. For example, in the case where the network device 110 configures both the mobility criteria and the cell edge criteria, a greater relaxation factor may be determined if only one of the criteria is met than if both criteria are met.
In some embodiments, if at least one criterion of the set of criteria is not met, the terminal device 120 may resume performing the evaluation using the normal evaluation period. For example, in the case where the network device 110 configures both the mobility criteria and the cell edge criteria, the terminal device 120 may resume performing the evaluation if one or both of the configured criteria are met.
Alternatively, if the counter is started, the terminal device 120 may restart performing the evaluation using the normal evaluation period. A counter may be used to count the number of consecutive out-of-sync indications. For example, the counter may be N310, which is incremented when "out of sync" is received from a lower layer when the timer T310 expires.
Alternatively, if the timer is started, the terminal device 120 may restart performing the evaluation using the normal evaluation period. The timer may be used to monitor the latency of a radio link failure. For example, the time may be T310, which starts when N310 reaches a maximum.
In some example embodiments, the terminal device 120 may perform BFD using a relaxed evaluation period based on a standard configuration. For example, terminal device 120 may perform BFD using a relaxed evaluation period in the serving cell for which at least one criterion of the set of criteria is met. Alternatively, if at least one criterion of the set of criteria is fulfilled for the serving cell, the terminal device 120 may perform BFD using a relaxed evaluation period in all serving cells. Alternatively, if at least one criterion of the set of criteria is fulfilled for all serving cells, the terminal device 120 may perform BFD in all serving cells using a relaxed evaluation period.
In some embodiments, terminal device 120 may perform BFD in a predetermined high frequency range using a relaxed evaluation period based on a standard configuration. For example, the predetermined high frequency range may be FR2. For example, if at least one criterion of the set of criteria is met for a serving cell of a set of serving cells configured with the same beam, terminal device 120 may perform BFD using a relaxed evaluation period in the set of serving cells. Alternatively, if at least one criterion of the set of criteria is fulfilled for all cells in the set of cells configured with the same beam, the terminal device 120 may perform BFD using a relaxed evaluation period in the set of cells.
In some embodiments, the means capable of performing the method 400 may comprise means for performing the respective steps of the method 400. The apparatus may be implemented in any suitable form. For example, the apparatus may be implemented as a circuit or a software module.
In some embodiments, an apparatus capable of performing the method 400 comprises: means for transmitting capability information from the terminal device to the network device, the capability information indicating a capability of the terminal device to relax an assessment of radio link quality; and means for receiving a relaxation configuration from the network device for relaxing the evaluation; and means for performing the evaluation using a relaxed evaluation period determined based on the relaxed configuration, the relaxed evaluation period being longer than a normal evaluation period without relaxing the evaluation.
In some embodiments, the evaluation may include at least one of RLM and BFD.
In some embodiments, the apparatus further comprises means for determining a relaxed evaluation period based on a relaxation factor indicated in the relaxation configuration. For example, the relaxation factor may be defined in a field of the relaxation configuration. In such embodiments, the relaxation factor may be determined by the network device based on the DRX cycle configured to the terminal device. Alternatively, the relaxation factor may be determined by the network device based on the configuration of the reference signal on which the evaluation is to be performed. Alternatively, the relaxation factor may be determined by the network device based on both the DRX cycle and the configuration of the reference signal.
In some embodiments, the apparatus further comprises means for determining a relaxed evaluation period based on a relaxation factor predefined for the relaxation configuration. In such implementations, the relaxation factor may be associated with at least one of a DRX cycle used by the terminal device or a type of reference signal. The evaluation will be performed on the type of reference signal on which the evaluation is to be performed.
In some embodiments, the means for performing the evaluation using the relaxed evaluation period comprises: means for receiving a standard configuration from the network device indicating a set of standards for relaxation assessment; and means for performing the evaluation using the relaxed evaluation period based on the standard configuration.
In some embodiments, the set of criteria includes at least one of: mobility criteria that explicitly indicate that the terminal device is in a low mobility state, or cell edge criteria that explicitly indicate that the terminal device is not located at an edge region of a serving cell.
In some embodiments, the means for performing the evaluation using a relaxed evaluation period based on a standard configuration comprises: means for performing an evaluation using a relaxed evaluation period in accordance with a determination that the terminal device is located at the central area of the serving cell, in accordance with a determination that the configuration of the determination criteria indicates only the mobility criteria.
In some embodiments, the means for performing the evaluation using a relaxed evaluation period based on a standard configuration comprises: means for performing an evaluation according to a standard configuration indicating both the mobility standard and the cell edge standard using a relaxed evaluation period according to a determination that at least one of the mobility standard and the cell edge standard is met.
In some embodiments, the apparatus capable of performing the method 400 further comprises: means for adjusting a relaxation factor for determining a relaxation evaluation period based on the number of criteria met.
In some embodiments, the apparatus capable of performing the method 400 further comprises: means for restarting the performing of the evaluation using the normal evaluation period in accordance with a determination that a timer is started, the timer being used for monitoring the latency of the radio link failure.
In some embodiments, the evaluating includes Beam Fault Detection (BFD), and the means for performing the evaluating using a relaxed evaluation period based on a standard configuration includes one of: means for performing BFD using the relaxed evaluation period in a serving cell for which at least one criterion of the set of criteria is met; means for performing BFD in all serving cells using a relaxed evaluation period in accordance with determining that at least one criterion of the set of criteria is met for the serving cell; or means for performing BFD in all serving cells using a relaxed evaluation period in accordance with determining that at least one criterion of the set of criteria is met for all serving cells.
In some embodiments, the evaluating includes BFD in a predetermined high frequency range (e.g., FR 2), and the means for performing the evaluating using a relaxed evaluation period based on a standard configuration includes one of: means for performing BFD in a group of serving cells configured with the same beam using a relaxed evaluation period in the group of serving cells in accordance with a determination that at least one criterion of the group of criteria is met for the serving cells; or means for performing BFD using a relaxed evaluation period in a group of serving cells configured with the same beam in accordance with a determination that at least one criterion of the set of criteria is met for all serving cells in the group of serving cells.
Fig. 5 illustrates a flowchart of an exemplary method 500 performed by a network device for measurement relaxation, according to some embodiments of the present disclosure. The method 500 may be implemented at a device (e.g., the network device 110 shown in fig. 1). It should be understood that method 500 may include additional blocks not shown and/or may omit some of the blocks shown, and that the scope of the present disclosure is not limited in this respect.
At block 510, the network device 110 receives capability information from the terminal device 120. The capability information indicates the capability of the terminal device 120 to relax the assessment of the quality of the wireless link. In some embodiments, the evaluation may include at least one of RLM and BFD.
At block 520, the network device 110 transmits a relaxation configuration for relaxation assessment to the terminal device 110, such that the terminal device performs the assessment using a relaxation assessment period determined based on the relaxation configuration. The relaxed evaluation period is longer than a normal evaluation period without relaxing the evaluation. The relaxation configuration may be signaled in a physiocalcellgroupconfig message.
In some embodiments, the relaxation configuration may indicate a relaxation factor for determining a relaxation evaluation period. For example, the relaxation factor may be defined in a field of the relaxation configuration. In such implementations, the network device 110 may determine the relaxation factor based on at least one of: the DRX cycle configured to the terminal device 120 or the configuration of the reference signal on which the evaluation is to be performed.
Alternatively, a relaxation factor for determining a relaxation evaluation period may be predefined for the relaxation configuration. For example, a relaxation factor corresponding to a relaxation configuration may be predefined in a technical specification or standard. In such implementations, the relaxation factor may be associated with at least one of a DRX cycle used by the terminal device 120 or a type of reference signal on which to perform the evaluation.
In some embodiments, network device 110 may transmit the standard configuration to terminal device 120. The standard configuration may indicate a set of criteria for relaxation assessment. In this way, the evaluation can be performed by the terminal device 120 using the relaxed evaluation period based on the standard configuration.
In such exemplary embodiments, the set of criteria may include at least one of mobility criteria and cell edge criteria. The mobility criterion may explicitly indicate that the terminal device is in a low mobility state. The cell edge criterion may explicitly indicate that the terminal device is not located at the edge region of the serving cell.
In some embodiments, the means capable of performing the method 500 may comprise means for performing the respective steps of the method 500. The apparatus may be implemented in any suitable form. For example, the apparatus may be implemented as a circuit or a software module.
In some embodiments, an apparatus capable of performing the method 500 comprises: means for receiving capability information from a terminal device at a network device, the capability information indicating a capability of the terminal device to relax an assessment of radio link quality; and means for transmitting a relaxation configuration for relaxing the evaluation to the terminal device such that the terminal device performs the evaluation using a relaxation evaluation period determined based on the relaxation configuration, the relaxation evaluation period being longer than a normal evaluation period in which the evaluation is not relaxed.
In some embodiments, the evaluation may include at least one of RLM and BFD.
In some embodiments, the relaxation configuration indicates a relaxation factor for determining a relaxation evaluation period. In some embodiments, the apparatus may include means for determining the relaxation factor based on at least one of: a Discontinuous Reception (DRX) cycle configured to a terminal device or a configuration of a reference signal on which to perform an evaluation.
Alternatively, a relaxation factor for determining a relaxation evaluation period is predefined for the relaxation configuration. In such implementations, the relaxation factor may be associated with at least one of a DRX cycle used by the terminal device or a type of reference signal on which to perform the evaluation.
In some embodiments, the apparatus capable of performing the method 500 further comprises: means for transmitting to the terminal device a standard configuration indicating a set of criteria for relaxation of the evaluation, such that the terminal device performs the evaluation using a relaxation evaluation period based on the standard configuration.
In some embodiments, the set of criteria includes at least one of: mobility criteria that explicitly indicate that the terminal device is in a low mobility state, or cell edge criteria that explicitly indicate that the terminal device is not located at an edge region of a serving cell.
Fig. 6 is a simplified block diagram of an apparatus 600 suitable for use in implementing embodiments of the present disclosure. For example, network device 110 and/or terminal device 120 may be implemented by device 600. As shown, the device 600 includes one or more processors 610, one or more memories 620 coupled to the processors 610, and one or more communication modules 640 coupled to the processors 610.
The communication module 640 is used for two-way communication. The communication module 640 has at least one antenna to facilitate communication. The communication interface may represent any interface necessary to communicate with other network elements.
The processor 610 may be of any type suitable to the local technology network and may include one or more of the following: by way of non-limiting example, general purpose computers, special purpose computers, microprocessors, digital Signal Processors (DSPs), and processors based on a multi-core processor architecture. The device 600 may have multiple processors, such as application specific integrated circuit chips, that are subject in time to a clock that synchronizes the main processor.
The memory 620 may include one or more non-volatile memories and one or more volatile memories. Examples of non-volatile memory include, but are not limited to, read-only memory (ROM) 624, electrically programmable read-only memory (EPROM), flash memory, hard disks, compact Discs (CDs), digital Video Discs (DVDs), and other magnetic and/or optical storage devices. Examples of volatile memory include, but are not limited to, random Access Memory (RAM) 622 and other volatile memory that does not last for the time of a power failure.
The computer program 630 includes computer-executable instructions that are executed by the associated processor 610. Program 630 may be stored in ROM 624. Processor 610 may perform any suitable operations and processes by loading program 630 into RAM 622.
Embodiments of the present disclosure may be implemented by means of program 630 such that device 600 may perform any of the processes of the present disclosure as discussed with reference to fig. 3-4. Embodiments of the present disclosure may also be implemented in hardware or by a combination of software and hardware.
In some embodiments, program 630 may be tangibly embodied in a computer-readable medium that may be included in device 600 (such as in memory 620) or other storage device accessible by device 600. Device 600 may load program 630 from a computer readable medium into RAM 622 for execution. The computer readable medium may include any type of tangible non-volatile memory, such as ROM, EPROM, flash memory, hard disk, CD, DVD, etc. The computer readable medium has a program 630 stored thereon.
In general, various embodiments of the disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of the embodiments of the disclosure are illustrated and described as block diagrams, flow charts, or using some other pictorial representation, it is well understood that these blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer-readable storage medium. The computer program product comprises computer executable instructions (such as those included in program modules) that are executed in a device on a target real or virtual processor to perform the method 400 as described above with reference to fig. 4 and/or the method 500 as described above with reference to fig. 5. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The functionality of the program modules may be combined or split between program modules as desired in various embodiments. Machine-executable instructions for program modules may be executed within local or distributed devices. In a distributed device, program modules may be located in both local and remote storage media.
Program code for carrying out the methods of the present disclosure may be written in any combination of one or more programming languages. These program code may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus such that the program code, when executed by the processor or controller, causes the functions/operations specified in the flowchart and/or block diagram to be implemented. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of this disclosure, computer program code or related data may be carried by any suitable carrier to enable an apparatus, device, or processor to perform the various processes and operations described above. Examples of carriers include signals, computer readable media, and the like.
The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a computer-readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
Further, while operations are illustrated in a particular order, this should not be construed as requiring that such operations be performed in a sequential order or in the particular order illustrated, or that all illustrated operations be performed, to achieve desirable results. In some cases, multitasking and parallel processing may be advantageous. While the above discussion contains several specific implementation details, these should not be construed as limitations on the scope of the disclosure, but rather as descriptions of features that may be specific to particular implementations. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.
Although the disclosure has been described in language specific to structural features and/or methodological acts, it is to be understood that the disclosure defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
It is well known that the use of personally identifiable information should follow privacy policies and practices that are recognized as meeting or exceeding industry or government requirements for maintaining user privacy. In particular, personally identifiable information data should be managed and processed to minimize the risk of inadvertent or unauthorized access or use, and the nature of authorized use should be specified to the user.

Claims (30)

1. A method, comprising:
transmitting capability information from a terminal device to a network device, the capability information indicating a capability of the terminal device to relax an assessment of radio link quality;
receiving a relaxation configuration from the network device for relaxing the evaluation; and
the evaluation is performed using a relaxed evaluation period determined based on the relaxed configuration, the relaxed evaluation period being longer than a normal evaluation period without relaxing the evaluation.
2. The method of claim 1, wherein the evaluation comprises at least one of Radio Link Monitoring (RLM) and Beam Fault Detection (BFD).
3. The method of claim 1, further comprising:
the relaxed evaluation period is determined based on a relaxation factor indicated in the relaxation configuration.
4. A method according to claim 3, wherein the relaxation factor is determined by the network device based on at least one of:
Discontinuous Reception (DRX) cycle configured to the terminal device, or
The configuration of the reference signal on which the evaluation is to be performed.
5. The method of claim 1, further comprising:
the relaxation evaluation period is determined based on a predefined relaxation factor for the relaxation configuration.
6. The method of claim 5, wherein the relaxation factor is associated with at least one of:
DRX cycle used by the terminal device, or
The type of reference signal on which the evaluation is to be performed.
7. The method of claim 1, wherein performing the evaluation using the relaxed evaluation period comprises:
receiving a standard configuration from the network device indicating a set of standards for relaxing the evaluation; and
the evaluation is performed using the relaxed evaluation period configured based on the criteria.
8. The method of claim 7, wherein the set of criteria comprises at least one of:
a mobility criterion that explicitly indicates that the terminal device is in a low mobility state, or a cell edge criterion that explicitly indicates that the terminal device is not located at an edge region of a serving cell.
9. The method of claim 8, wherein performing the evaluation using the relaxed evaluation period based on the standard configuration comprises:
in accordance with a determination that the standard configuration indicates only the mobility standard,
in accordance with a determination that the terminal device is located at a central region of a serving cell, the evaluation is performed using the relaxed evaluation period.
10. The method of claim 8, wherein performing the evaluation using the relaxed evaluation period based on the standard configuration comprises:
in accordance with determining that the standard configuration indicates both the mobility criteria and the cell edge criteria,
in accordance with a determination that at least one of the mobility criteria and the cell edge criteria is met, the evaluating is performed using the relaxed evaluation period.
11. The method of claim 7, further comprising:
a relaxation factor for determining the relaxation of the evaluation period is adjusted based on the number of criteria satisfied.
12. The method of claim 7, further comprising:
in accordance with a determination that at least one criterion of the set of criteria is not met, resuming performance of the evaluation using the normal evaluation period.
13. The method of claim 1, further comprising:
in accordance with a determination that a counter is started for counting the number of consecutive out-of-sync indications, the normal evaluation period is restarted for performing the evaluation.
14. The method of claim 1, further comprising:
in accordance with a determination that a timer is started, restarting performing the evaluation using the normal evaluation period, the timer being used to monitor a latency of a radio link failure.
15. The method of claim 7, wherein the evaluating comprises beam fault detection, BFD, and performing the evaluating using the relaxed evaluation period based on the standard configuration comprises one of:
the BFD is performed using the relaxed evaluation period in a serving cell for which at least one criterion of the set of criteria is met,
the BFD is performed using the relaxed evaluation period in all serving cells in accordance with a determination that at least one criterion of the set of criteria is met for all serving cells, or the BFD is performed using the relaxed evaluation period in all serving cells in accordance with a determination that at least one criterion of the set of criteria is met for all serving cells.
16. The method of claim 7, wherein the evaluation comprises BFD in a predetermined high frequency range and performing the evaluation using the relaxed evaluation period configured based on the criteria comprises one of:
in accordance with a determination that at least one criterion of the set of criteria is met for a serving cell of a group of serving cells configured with the same beam, the BFD is performed in the group of serving cells using the relaxed evaluation period, or
In accordance with a determination that at least one criterion of the set of criteria is met for all cells in a set of cells configured with the same beam, the BFD is performed in the set of cells using the relaxed evaluation period.
17. A method, comprising:
receiving capability information from a terminal device at a network device, the capability information indicating a capability of the terminal device to relax an assessment of radio link quality;
transmitting a relaxation configuration for relaxing the evaluation to the terminal device so that the terminal device performs the evaluation using a relaxation evaluation period determined based on the relaxation configuration, the relaxation evaluation period being longer than a normal evaluation period in which the evaluation is not relaxed.
18. The method of claim 17, wherein the evaluation comprises at least one of Radio Link Monitoring (RLM) and Beam Fault Detection (BFD).
19. The method of claim 17, wherein the relaxation configuration indicates a relaxation factor for determining the relaxation evaluation period.
20. The method of claim 19, further comprising determining the relaxation factor based on at least one of:
discontinuous Reception (DRX) cycle configured to the terminal device, or
The configuration of the reference signal on which the evaluation is to be performed.
21. The method of claim 17, wherein a relaxation factor for determining the relaxation evaluation period is predefined for the relaxation configuration.
22. The method of claim 21, wherein the relaxation factor is associated with at least one of:
DRX cycle used by the terminal device, or
The type of reference signal on which the evaluation is to be performed.
23. The method of claim 17, wherein performing the evaluation using the relaxed evaluation period comprises:
transmitting to the terminal device a standard configuration indicating a set of criteria for relaxing the evaluation, such that the terminal device performs the evaluation using the relaxed evaluation period based on the standard configuration.
24. The method of claim 23, wherein the set of criteria comprises at least one of:
a mobility criterion that explicitly indicates that the terminal device is in a low mobility state, or a cell edge criterion that explicitly indicates that the terminal device is not located at an edge region of a serving cell.
25. A terminal device, comprising:
a processor; and
a memory coupled to the processor and having stored thereon instructions that, when executed by the processor, cause the terminal device to perform the method according to any of claims 1 to 16.
26. A network device, comprising:
a processor; and
a memory coupled to the processor and having stored thereon instructions that, when executed by the processor, cause the network device to perform the method of any of claims 17-24.
27. A computer program product stored on a computer readable medium and comprising machine executable instructions, wherein the machine executable instructions, when executed, cause a machine to perform the method of any one of claims 1 to 16.
28. A computer program product stored on a computer readable medium and comprising machine executable instructions, wherein the machine executable instructions, when executed, cause a machine to perform the method of any one of claims 17 to 24.
29. A baseband processor of a terminal device, the baseband processor being configured to perform the method according to any of claims 1 to 16.
30. A baseband processor of a network device, the baseband processor being configured to perform the method of any of claims 17 to 24.
CN202180095699.2A 2021-01-15 2021-05-31 Relaxing assessment of radio link quality Pending CN116982352A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CNPCT/CN2021/072105 2021-01-15
CN2021072105 2021-01-15
PCT/CN2021/097257 WO2022151632A1 (en) 2021-01-15 2021-05-31 Relaxing evaluation of radio link quality

Publications (1)

Publication Number Publication Date
CN116982352A true CN116982352A (en) 2023-10-31

Family

ID=82447803

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202180095699.2A Pending CN116982352A (en) 2021-01-15 2021-05-31 Relaxing assessment of radio link quality

Country Status (3)

Country Link
US (1) US20240073728A1 (en)
CN (1) CN116982352A (en)
WO (1) WO2022151632A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116097714A (en) * 2022-09-14 2023-05-09 北京小米移动软件有限公司 Method, device, communication equipment and storage medium for determining BFD relaxation state

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109923820B (en) * 2016-11-04 2022-07-26 瑞典爱立信有限公司 Wireless device and network node for wireless communication system and method thereof
CN111316577A (en) * 2017-09-11 2020-06-19 Idac控股公司 Method, apparatus and system for Radio Link Monitoring (RLM) in New Radio (NR)
EP3925308A1 (en) * 2019-02-14 2021-12-22 Nokia Technologies Oy Stationarity-based ue power saving

Also Published As

Publication number Publication date
US20240073728A1 (en) 2024-02-29
WO2022151632A1 (en) 2022-07-21

Similar Documents

Publication Publication Date Title
RU2670604C1 (en) Method and apparatus for monitoring quality of radiocommunication line
US20200145091A1 (en) Radio Link Monitoring Method and Apparatus
JP2021503753A (en) How to perform wireless link monitoring
JP6099064B2 (en) Method and apparatus for receiving timing information from a cell or network in a low active mode
US20230284145A1 (en) Rlm for scg in power-saving mode
US20200374935A1 (en) Random access with different tti durations
US20230269614A1 (en) Measurement adjustment method and terminal
US11997605B2 (en) Uplink information based on wake-up signal
US20240089774A1 (en) Measuring a Reference Signal with Associated Synchronization Signal
CN115152318B (en) Event-triggered measurement for channel state information
US20230262509A1 (en) Resource measurement adjustment method and apparatus, terminal, and readable storage medium
WO2022016493A1 (en) Radio resource management measurement relaxation and cell reselection
WO2022151632A1 (en) Relaxing evaluation of radio link quality
US20230224750A1 (en) Relaxation of measurements for failure detection
WO2023133892A1 (en) Enhanced user equipment report
WO2022236557A1 (en) Priority setting for quality of experience
WO2022032530A1 (en) Handling of csi-rs measurement
WO2022021313A1 (en) Transmission detection skipping mechanism for power saving
CN116114303A (en) Serving cell change procedure with multiple candidate target cells
WO2023023967A1 (en) Relaxed measurement timing configurations
WO2022252154A1 (en) Relaxation compensation for improved system performance
US20240236745A1 (en) Priority setting for quality of experience
WO2023216264A1 (en) Reporting of relaxation status of signal measurement
WO2023201729A1 (en) Method and apparatus for small data transmission
WO2024082149A1 (en) Positioning

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination